Cylindrical Surface Mount Metal Glaze™ Compliant Terminal Resistors SMC Series • • • • Lead free, RoHS compliant Uses standard IRC 2512, 3610 solder pads Ideal for automotive and other harsh thermal applications Uncompromising Metal Glaze™ performance gives excellent surge performance • Capped terminals provide mechanical compliance-relief from board vs. component TCE mismatch Electrical Data IRC Type Industry Standard Footprint Power Rating @ 70°C (Watts) Resistance Range (Ohms) Tolerance (±%)1 TCR (±ppm/°C) Operating Voltage (V) Maximum Voltage (V) SMC-1 2512 1.0 0.5 to 1M 1, 2, 5 100 350 650 SMC-2 3610 2.0 0.5 to 2M 1, 2, 5 100 500 1000 Notes: 1 For tolerances below ±1%, please contact factory. Environmental Data Characteristics Maximum Change Test Method Temperature Coefficient (ppm/°C) As specified MIL-PRF-55342E Par 4.7.9 (-55°C to +125°C) Thermal Shock ±0.5% +0.01Ω MIL-PRF-55342E Par 4.7.3 (-65°C to +150°C) Low Temperature Operation ±0.25% +0.01Ω MIL-PRF-55342E Par 4.7.4 (-65°C @ working voltage) Short Time Overload ±0.5% +0.01Ω ±1% for (R>100KΩ) High Temperature Exposure ±0.5% +0.01Ω MIL-PRF-55342E Par 4.7.6 (+150°C for 100 hours) Resistance to Bonding ±0.25% +0.01Ω MIL-PRF-55342E Par 4.7.7 (Reflow soldered to board @ 260°C for 10 seconds) Solderability 95% minimum coverage MIL-STD-202, Method 208 (245°C for 5 seconds) Moisture Resistance ±0.5% +0.01Ω MIL-PRF-55342E Par 4.7.8 (10 cycles, total 240 hours) Life Test ±0.5% +0.01Ω MIL-PRF-55342E Par 4.7.10 (2000 hours @ 70°C intermittent) Terminal Adhesion Strength ±1% +0.01 no mechanical damage 1200 gram push from underside of mounted chip for 60 seconds Resistance to Board Bending ±1% +0.01 no mechanical damage Chip mounted in center of 90mm long board, deflected 5mm so as to exert pull on chip contacts for 10 seconds Operating Temperature MIL-PRF-55342E Par 4.7.5 (2.5 x √ PxR for 5 seconds) -55°C to +150°C General Note IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC’s own data and is considered accurate at time of going to print. Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com A subsidiary of TT electronics plc SMC Series Issue April 2009 Sheet 1 of 3 Cylindrical Surface Mount Metal Glaze™ Compliant Terminal Resistors Physical Data L C W Dimensions (Inches and (mm)) Industry Footprint IRC Type 2512 SMC-1 3610 SMC-2 L (Length) W (Width/Diameter) C (Termination Width) 0.250 ±0.010 0.122 ±0.003 0.060 ±0.010 (6.35 ±0.25) (3.10 ±0.08) (1.50 ±0.25) 0.367 ±0.010 0.122 ±0.003 0.060 ±0.010 (9.32 ±0.25) (3.10 ±0.08) (1.50 ±0.25) Recommended Solder Pad Dimensions (Reflow): F B A C A E D Industry Footprint Dimensions (Inches and mm)) A B C D E F 2512 0.121 (3.07) 0.126 (3.20) 0.127 (3.23) 0.183 (4.65) 0.040 (1.02) 0.369 (9.37) 3610 0.170 (4.32) 0.160 (4.06) 0.213 (5.41) 0.273 (6.93) 0.044 (1.12) 0.553 (14.05) Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com SMC Series Issue April 2009 Sheet 2 of 3 Cylindrical Surface Mount Metal Glaze™ Compliant Terminal Resistors Surge Capabilities Power Derating Curve SMC Series Surge Capability for Non-repetitive or Low-Repetition Rate Surges 120 1,000 SMC-2 100 SMC-1 % Of Rated Power Peak Power (Watts) 10,000 10 SMC-2 100 80 SMC-1 60 40 20 1 1.0E-04 1.0E-03 0.1 msec 1.0E-02 1.0E-01 10 msec 1 msec 0 25 35 45 55 65 75 85 95 105 115 125 135 145 100 msec Ambient Temperature (°C) Surge or Pulse Duration (Seconds) Standard Reel Packaging per EIA-481: Industry Footprint Reel Diameter* Quantity Per Reel Carrier Tape Width Component Pitch 2512 13″ 5,000 max. 12mm 4mm 3610 7″ 1,500 max. 24mm 4mm *The 13″ reel is considered standard and will be supplied unless otherwise specified. Ordering Data Sample Part No. SMC1 100 2003 F LF 13 IRC Type (SMC1 or SMC2) Temperature Coefficient (50 or 100 ppm) Resistance Value (First three significant figures plus fourth digit multiplier) Example: 2203 = 220KΩ 51R0 = 51Ω R200 = 0.2Ω Tolerance C = ±0.25%, D = ±0.5%, F = ±.01%, G = ±2.0%, J = ±5.0% LF Provides clear "Lead Free" Designation Packaging Code (7 = 7" Reel, 13 = 13" Reel) Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com SMC Series Issue April 2009 Sheet 3 of 3